In CIty A, the average wind speed is known to be about 4.72 m/s, while the...
In CIty A, the average wind speed is known to be about 4.72 m/s, while the average wind speed in city B is known to be about 8.19 m/s. Consider the power output given by Pout=1/2 ηρAv3. What is the ratio of energy output of the wind turbine in City B to City A?
Select one:
a. 0.58
b. 3.01
c. 5.22
d. 1.74
e. 0.19
Homework Answers
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In CIty A, the average wind speed is known to be about 4.72 m/s,
while the...
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Find the power production (in MW) of a 25 m radius wind turbine if the average...
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For this problem, consider a site which is experiencing a wind speed of 9.5 m/s. You...
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Question 30 6 points Save Answer (LO4) A wind turbine with a 40-m-diameter rotor is rotating at 21 rpm under steady winds at an average velocity of 14.7 m/s. The electrical power output from the generator is 350 kW. The efficiency of the gearbox is 93% and generator efficiency is 86%. Take the density of air to be 1.013 kg/m. Answer the following questions; use the white paper to work-out your calculations and then choose the correct answer from the...
3. A wind turbine has blades, which sweep out an area of diameter 25 m 25m blades Fig. 5.1 (a) The wind is blowing directy towards the wind turbine at a speed of 12 m/s. At this wind speed, 7500 kg of air passes every second through the circular area swept out by the blades. U) Calculate the kinetic energy of the air travelling at 12 m /s, which passes through the circular area in 1 second Kinetic energy. The...
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